基于InSAR评估地下水位回升对太原市地面沉降的影响
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唐 伟(1987-),男,博士,副教授,主要从事雷达遥感InSAR地面沉降监测研究。Email: weitang@cumtb.edu.cn。 |
Copy editor: 陈昊旻
收稿日期: 2023-11-29
修回日期: 2024-04-11
网络出版日期: 2026-06-03
基金资助
国家自然科学基金面上项目“综合多源大地测量研究汾河流域地下水位回升对区域地面沉降的调控作用机制”(42374023)
Land subsidence caused by groundwater level recovery in Taiyuan City
Received date: 2023-11-29
Revised date: 2024-04-11
Online published: 2026-06-03
唐伟 , 闫壮壮 , 王一鸣 , 徐方芳 , 吴烜宇 . 基于InSAR评估地下水位回升对太原市地面沉降的影响[J]. 自然资源遥感, 2025 , 37(2) : 108 -116 . DOI: 10.6046/zrzyyg.2023367
Over the past few decades, excessive groundwater exploitation has led to a significant decrease in the groundwater level and serious land subsidence in Taiyuan City. In recent years, Taiyuan has vigorously implemented strict groundwater management measures and the project of water diversion into Shanxi from the Yellow River, substantially alleviating groundwater overexploitation and gradually recovering groundwater levels in the city. Therefore, it is necessary to scientifically assess the effect of groundwater level revovery on land subsidence. Based on 2003—2010 synthetic aperture radar (SAR) data from ENVISAT and 2017—2021 SAR data from Sentinel-1, this study extracted the land subsidence information of Taiyuan City of both periods using persistent scatterer interferometric SAR (PS-INSAR). Accordingly, this study compared and analyzed the temporal evolution of land subsidence during the two periods by combining the groundwater extraction volumes, water volumes diverted from the water diversion project, and data on groundwater levels. The results show that the land subsidence in Taiyuan City has been significantly mitigated, with the urban area having shifted from subsidence to uplift. In the Xiaodian area, which underwent the most serious land subsidence, the subsidence area expanded. Nevertheless, the overall land subsidence rate decreased, and the subsidence center has moved southward. The main cause for the slowdown of the land subsidence and even the land uplift in Taiyuan is the continuous groundwater level recovery attributed to the reduced groundwater exploitation and the water diversion project. The results of this study provide a scientific basis for fine-scale land subsidence prevention and groundwater management in Taiyuan City under conditions of groundwater level recovery.
图6 2个时段5个沉降中心的沉降时间序列Fig.6 Time series of displacement in 5 subsidence centers in two periods |
表1 5个沉降中心在2个时间段的年平均沉降速率及变化Tab. 1 Average subsidence rates in the 5 subsidence centers |
| 点号 | 地区 | (mm· a-1) | (mm· a-1) | ΔV/ (mm· a-1) | 状态变化 |
|---|---|---|---|---|---|
| P1 | 西张-北固碾村 | +22.21 | -0.97 | -23.18 | 抬升→稳定 |
| P2 | 万柏林-良源小区 | -42.28 | +13.18 | +55.46 | 沉降→抬升 |
| P3 | 下元-华景苑 | -38.23 | +7.83 | +46.06 | 沉降→抬升 |
| P4 | 吴家堡-悦泉苑 | -51.06 | +1.37 | +52.43 | 沉降→抬升 |
| P5 | 小店-富士康 科技园 | -66.53 | -39.34 | +27.19 | 沉降速率减小 |
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